iOS 10 annoying bugs (iPhone 6)

Hi,

I have an iPhone 6 currently running on iOS 10.1.1. I've updated my iPhone to iOS 10 right when it was available in september. Since then there are three very annoying bugs on my phone that are still not solved in the iOS 10 updates.

1. When I try to multitask (double click home button), all apps in the multitask screen are just randomly flying away, leaving a blank screen only showing my phone's wallpaper. When I click the home button again it brings me back to the home screen. This always happens after a few seconds in multitask mode, so I have to be very quick to close all my apps before it glitches again.

2. Most of the time I have to fully restart/reboot my iPhone to make the audio in the music app work. I can see my music is playing but there's no sound coming out of my phone, with or without headphones. Restarting the phone does the trick but having to do this every time I want to listen to some music is really annoying.

3. Same goes with playing videos. They just refuse to play in the YouTube app, Safari, and all other apps. The bar is loading and I can even scroll in the time bar, but the videos just don't run. Restarting the phone also does the trick here, but again, it's very annoying.

I thought Apple would have solved this by now, but unfortunately they still didn't. I've already completely restored my iPhone twice, but it didn't solve anything.

Anyone else having these problems? What can I do to make my iPhone work properly again?

Thanks in advance.